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Finding the Fourth Proportional to 519,888.90, 778,521.15 and 341,429.70

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Solution

The fourth proportional to 519,888.90, 778,521.15 and 341,429.70 is: 511,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,888.90 : 778,521.15 = 341,429.70 : x
  2. Step 2: Convert to fraction form
    519,888.90/778,521.15 = 341,429.70/x
  3. Step 3: Cross multiply
    519,888.90x = 778,521.15 × 341,429.70
  4. Step 4: Simplify right side
    519,888.90x = 265,810,242,688.16
  5. Step 5: Solve for x
    x = 265,810,242,688.16/519,888.90
  6. Step 6: Final answer
    x = 511,282.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.